1985 QG4

1985QG4, 1977 DT5, 1977DT5, 19957, 2000 XQ16, 2000XQ16, J77D05T, J85Q04G, K00X16Q

All data for this body: [vot]

MPC data
Name (number) 1985 QG4 (19957)
a 2.33373
e 0.22610
i / sin(i) 9.8271 / 0.17068
q 1.80606
Q 2.86139
ω 297.2627
Node 337.0361
m 80.8238
n 0.2765
Epoch 2460800.5
nobs 2487
nopp 26
Years observed 1953-2025
rms 0.71
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.334
ep 0.198
sin(ip) 0.182
G 0.150
H 14.590
Mass
D 2.32 0.225
pV 0.754 0.1684
Value
Rotational Period 98.400
Period quality 2
Spectral Class B
Spectral Class Score 1.074
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3343 0.1978 0.1820 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.32 0.225 0.225 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.754 0.1684 0.1684 Masiero 2011ApJ...741...68M NEATM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2023-12-94 MPC-2023-12-94 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
14.59 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
98.41 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
B 0.179 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT